The Wash Day Essentials delivers hair that is softer, stronger, and healthier. This set includes OLAPLEX N°.4 Bond Maintenance™ Shampoo and N°.5 Bond Maintenance™ Conditioner, each 250 mL. The highly concentrated, reparative formulas repair, strengthen, and nourish all hair types. They hydrate and smooth, helping to prevent breakage and frizz, while being dermatologist tested, vegan, and color-safe.